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Steam reforming of methane over Ni/SiO2 catalyst with enhanced coke resistance at low steam to methane ratio

Paper ID Volume ID Publish Year Pages File Format Full-Text
53954 46990 2015 7 PDF Available
Title
Steam reforming of methane over Ni/SiO2 catalyst with enhanced coke resistance at low steam to methane ratio
Abstract

•Ni/SiO2 catalyst made by DBD plasma has smaller particle size.•Ni/SiO2 catalyst made by DBD plasma shows well-distributed particles.•Ni/SiO2 catalyst made by DBD plasma possesses superior activity.•Ni/SiO2 catalyst made by DBD plasma exhibits enhanced coke resistance.

Dielectric barrier discharge (DBD) plasma was applied for the decomposition of nickel nitrate under air at ∼150 °C. Calcination (at 500 °C) under air and hydrogen reduction (at 500 °C) thermally were then conducted. The obtained Ni/SiO2 catalyst was investigated for steam reforming of methane (SRM) at the reaction temperatures of 600, 700 and 800 °C with a very low steam to methane molar ratio (H2O/CH4 = 0.5), in order to test the coke resistance of the catalyst. The DBD plasma prepared catalyst possesses an average particle size of 5.5 nm, much smaller than 15.3 nm of the thermally calcined one. The smaller catalyst size can lead to an enhanced coke resistance over the plasma prepared catalyst. The carbon nanotubes obtained on the used plasma prepared catalyst are very different from those formed on the calcined catalyst. The plasma decomposition is excellent for further investigation of effect of the catalyst structure beyond the nickel catalyst.

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Keywords
Nickel; Steam reforming; Methane; Coke resistance; Plasma
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Steam reforming of methane over Ni/SiO2 catalyst with enhanced coke resistance at low steam to methane ratio
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 256, Part 1, 1 November 2015, Pages 130–136
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us